A simple trick can make a dog treat a stranger as their friend

If an unfamiliar person spends 15 minutes following a dog, it tends to follow them back in a possible sign of friendship

​If an unfamiliar person spends 15 minutes following a dog, it tends to follow them back in a possible sign of friendship If an unfamiliar person spends 15 minutes following a dog, it tends to follow them back in a possible sign of friendship